Well, the closest I can find starting with "Confiteor Deo omnipoténti...mea culpa, mea culpa, mea maxima culpa..." is the prayer "I confess to the almighty God, and to you my brothers and sisters, that I have sinned through my own fault...etc" but there's more than one prayer in here. I think the other is the prayer to St. Michael the Archangel? idk we always say that one in English at my church.